国产日韩欧美一区二区三区三州_亚洲少妇熟女av_久久久久亚洲av国产精品_波多野结衣网站一区二区_亚洲欧美色片在线91_国产亚洲精品精品国产优播av_日本一区二区三区波多野结衣 _久久国产av不卡

?

miR-212在乳腺浸潤(rùn)性導(dǎo)管癌組織中的表達(dá)及效應(yīng)分析

2015-01-18 05:30:45瞿海江張?bào)闳A黃關(guān)立胡哲魏志平
浙江醫(yī)學(xué) 2015年1期
關(guān)鍵詞:浸潤(rùn)性乳腺引物

瞿海江 張?bào)闳A 黃關(guān)立 胡哲 魏志平

miR-212在乳腺浸潤(rùn)性導(dǎo)管癌組織中的表達(dá)及效應(yīng)分析

瞿海江 張?bào)闳A 黃關(guān)立 胡哲 魏志平

目的 分析miR-212在乳腺浸潤(rùn)性導(dǎo)管癌組織中的表達(dá)及與乳腺癌臨床病理特征之間的相關(guān)性,并分析其效應(yīng)。方法 采用莖環(huán)RT-qPCR方法檢測(cè)38例乳腺癌及癌旁正常乳腺組織標(biāo)本中miR-212的表達(dá),統(tǒng)計(jì)分析其表達(dá)水平與乳腺癌常用臨床病理指標(biāo)間的關(guān)系。不同濃度miR-212 inhibitor轉(zhuǎn)染MCF7乳腺癌細(xì)胞,通過(guò)MTT法分析細(xì)胞活性,通過(guò)Tran-swell實(shí)驗(yàn)檢測(cè)細(xì)胞的侵襲能力。 結(jié)果 與癌旁正常乳腺組織比較,乳腺癌組織中miR-212的表達(dá)明顯升高(P<0.05);分析miR-212表達(dá)水平與乳腺癌常用臨床病理指標(biāo)間的關(guān)系發(fā)現(xiàn),miR-212表達(dá)水平與乳腺癌細(xì)胞與淋巴結(jié)轉(zhuǎn)移、TNM分期相關(guān)及增殖指數(shù)(ki67)相關(guān)(P<0.05),與月經(jīng)狀況、腫塊大小、雌激素和孕激素受體狀態(tài)、Her-2表達(dá)未見(jiàn)顯著相關(guān)性(P>0.05)。細(xì)胞干預(yù)實(shí)驗(yàn)顯示,與空白對(duì)照組、陰性對(duì)照組比較,miR-212 inhibitor可明顯抑制MCF7細(xì)胞增殖活性(P<0.05)和細(xì)胞遷移(P<0.01)。 結(jié)論 乳腺癌組織高表達(dá)的miR-212在乳腺癌發(fā)展過(guò)程中發(fā)揮重要作用,有望成為乳腺癌防治的一個(gè)新靶點(diǎn)。

微小RNA miR-212 乳腺癌

長(zhǎng)度約22nt的內(nèi)源性小RNA,即micro RNA(miRNA),通過(guò)調(diào)控癌基因或抑癌基因的表達(dá),在腫瘤的發(fā)生、發(fā)展中起重要的調(diào)控作用,是目前腫瘤研究領(lǐng)域的熱點(diǎn)[1-2]。近年來(lái)的研究發(fā)現(xiàn),microRNA-212(miR-212)的表達(dá)與肺癌[3]、胰腺癌[4]、胃癌[5]等多種腫瘤相關(guān),但其表達(dá)與乳腺癌的相關(guān)性少有研究。為此,本研究采用莖環(huán)RT-qPCR方法檢測(cè)了38例乳腺浸潤(rùn)性導(dǎo)管癌中mir-212的相對(duì)表達(dá),分析其與臨床病理特征的關(guān)系,并通過(guò)化學(xué)合成的miR-212 inhibitor轉(zhuǎn)染乳腺癌細(xì)胞,下調(diào)其表達(dá),分析其對(duì)細(xì)胞增殖、侵襲和遷移的影響。

1 資料和方法

1.1 臨床資料

1.1.1 標(biāo)本來(lái)源及保存 2012年11月至 2013年12月溫州醫(yī)科大學(xué)附屬第一醫(yī)院腫瘤科及臺(tái)州市腫瘤醫(yī)院腫瘤外科收治的乳腺浸潤(rùn)性導(dǎo)管癌患者37例,年齡32~67歲,中位年齡49歲;術(shù)前未行放、化療。每例標(biāo)本留取腫瘤組織及對(duì)應(yīng)的距腫瘤5cm以上的癌旁正常乳腺組織,標(biāo)本離體后10min內(nèi)置于液氮保存。

1.1.2 主要試劑 mirVanaTMmiRNA分離試劑盒、Lipofectamin 2000轉(zhuǎn)染試劑購(gòu)自美國(guó)Life Technologies公司;M-MLV逆轉(zhuǎn)錄酶、RNA酶抑制劑、SYBR Mastermix購(gòu)自日本東洋紡(上海)生物科技有限公司;細(xì)胞計(jì)數(shù)試劑盒-8(cell counting kit-8,CCK-8)購(gòu)自日本同仁化學(xué)所;Matrigel購(gòu)自美國(guó)BD Bioscience公司;Tran-swell小室購(gòu)自美國(guó)Costar公司;DMEM為美國(guó)Gibico公司產(chǎn)品,胎牛血清(FBS)為美國(guó)Gibico公司產(chǎn)品。引物由上海英駿生物技術(shù)有限公司合成;miR-212 inhibitor由上海吉瑪生物公司合成。MCF7乳腺癌細(xì)胞購(gòu)自中國(guó)科學(xué)院上海生科院細(xì)胞資源中心。

1.2 方法

1.2.1 小RNA的提取 取液氮保存的乳腺腫瘤及正常乳腺組織標(biāo)本,在液氮中碾碎至粉狀,按mirVanaTMmiRNA分離試劑盒說(shuō)明書(shū)提取miRNA,DEPC處理水溶解。采用德國(guó)EPPENDORF公司分光光度儀(Biophotometer)檢測(cè)RNA溶液OD260/OD280吸光值,計(jì)算RNA濃度和純度。

1.2.2 miR-212表達(dá)檢測(cè) 采用莖環(huán)RT-qPCR方法,以U6作為內(nèi)參,分析miR-212表達(dá)。相關(guān)分析的引物序列見(jiàn)表1。0.1μg小RNA以U6和miR-212莖環(huán)RT引物分別進(jìn)行逆轉(zhuǎn)錄,反應(yīng)條件為:16℃30min,42℃30min,75℃15min,反應(yīng)結(jié)束后-20℃保存。以15μl反應(yīng)體系進(jìn)行Real-time定量PCR。miRNA檢測(cè)反應(yīng)體系包括:1μl RT產(chǎn)物,1×SYBR Green I Mastermix,0.5μM特異前向引物、0.5μM特異反向引物。Real-time定量PCR條件為:95°C 10min后,95°C 15s,60°C 1min,40循環(huán)。Real-time定量 PCR使用 Applied Biosystems 7500儀器進(jìn)行。所有樣品做3復(fù)孔。采用定量PCR中的相對(duì)定量法,以N=2-ΔΔCt表示腫瘤組織miRNA表達(dá)相對(duì)于配對(duì)的正常組織的變化倍數(shù),其中ΔΔCt=(CtmiR-212-CtU6)腫瘤-(CtmiR-212-CtU6)正常。

表1 引物序列

1.2.3 CCK-8檢測(cè)MCF7細(xì)胞miR-212 inhibitor轉(zhuǎn)染增殖能力 MCF7乳腺癌細(xì)胞常規(guī)培養(yǎng)于含10%FBS的RPMI-1640培養(yǎng)基中,取對(duì)數(shù)生長(zhǎng)期的細(xì)胞,胰酶消化細(xì)胞并計(jì)數(shù),以2×105/孔接種于96孔培養(yǎng)板,按照Lipofectamin 2000轉(zhuǎn)染試劑說(shuō)明書(shū)進(jìn)行轉(zhuǎn)染。實(shí)驗(yàn)分3組:(1)空白對(duì)照組,僅加入脂質(zhì)體;(2)無(wú)關(guān)序列組,加入無(wú)關(guān)序列和脂質(zhì)體;(3)miR-212干預(yù)組,加入20、40、80nM miR-212 inhibitor和相應(yīng)劑量的脂質(zhì)體。每組設(shè)3個(gè)復(fù)孔。分別在轉(zhuǎn)染24h、48h后,按CCK-8試劑盒說(shuō)明書(shū)檢測(cè)腫瘤細(xì)胞的活性。所有實(shí)驗(yàn)重復(fù)3次。

1.2.4 Transwell侵襲實(shí)驗(yàn)檢測(cè)腫瘤細(xì)胞的侵襲能力 按TranswellTM說(shuō)明書(shū),將Matrigel預(yù)冷成液態(tài),用無(wú)血清培養(yǎng)液1∶1稀釋?zhuān)尤隩ranswell小室,每孔15μl,37℃包被1 h,以無(wú)血清培養(yǎng)液洗3次后備用。按照 Lipofectamin 2000轉(zhuǎn)染試劑說(shuō)明書(shū)進(jìn)行轉(zhuǎn)染的MCF7細(xì)胞去培養(yǎng)基,PBS液洗3次。在Transwell小室上部培養(yǎng)嵌室(insert)內(nèi)加入1×104/孔細(xì)胞懸液,每組設(shè)3個(gè)復(fù)孔。向底部培養(yǎng)室加入600μl含15%FBS的RPMI 1640完全培養(yǎng)液。37℃、5%CO2培養(yǎng)24h。吸去嵌室內(nèi)的液體,用棉棒擦去嵌室底部?jī)?nèi)表面上的細(xì)胞,將嵌室浸入固定液(50%甲醇)固定15min,PBS洗3遍。結(jié)晶紫染色30min。風(fēng)干后,熒光顯微鏡下每個(gè)培養(yǎng)孔隨機(jī)選擇10個(gè)視野拍照計(jì)數(shù),并計(jì)算每個(gè)視野的平均數(shù)。

1.3 統(tǒng)計(jì)學(xué)處理 miRNA-212表達(dá)數(shù)據(jù)以中位數(shù)和四分位數(shù)間距表示。采用SPSS 16.0統(tǒng)計(jì)軟件的非參數(shù)Wilcoxon符號(hào)秩檢驗(yàn)(配對(duì)的正常和腫瘤組),Mann-Whitney U檢驗(yàn)和Kruskal-Wallis H檢驗(yàn)進(jìn)行統(tǒng)計(jì)處理。

2 結(jié)果

2.1 miR-212在乳腺癌及對(duì)應(yīng)正常乳腺組織中的表達(dá) 如圖1所示,miR-212及U6的RT-PCR產(chǎn)物的溶解曲線為單峰,說(shuō)明莖環(huán)RT-qPCR可以特異檢測(cè)miR-212及U6。以U6為內(nèi)參,檢測(cè)乳腺癌及對(duì)應(yīng)正常乳腺組織miR-212的表達(dá)。結(jié)果顯示(圖2)與對(duì)應(yīng)正常乳腺組織比較,miR-212在37例乳腺癌組織中表達(dá)明顯升高,其相對(duì)表達(dá)量為2.704(1.354,3.745)。采用配對(duì)樣本的Wilcoxon符號(hào)秩檢驗(yàn)其差異有統(tǒng)計(jì)學(xué)意義(P<0.0001)。

2.2 miR-212表達(dá)與乳腺癌臨床病理特征的關(guān)系 見(jiàn)表2。

由表2可見(jiàn),miR-212在乳腺癌組織中的表達(dá)與TNM分期、淋巴結(jié)轉(zhuǎn)移及增殖指數(shù)(ki67)相關(guān)。有淋巴結(jié)轉(zhuǎn)移組miR-212的表達(dá)顯著高于無(wú)淋巴結(jié)轉(zhuǎn)移組(P=0.003);mir-212表達(dá)水平在Ⅰ、Ⅱ、Ⅲ期TNM分期的乳腺癌組織中位表達(dá)值分別為I期1.452、2.633、4.422,3個(gè)時(shí)期表達(dá)水平差異有統(tǒng)計(jì)學(xué)意義(P=0.015);此外mir-212的表達(dá)還和ki67有關(guān),在高ki67組(ki67>10%)乳腺癌組織miR-212的表達(dá)顯著高于低ki67組(ki67≤10%,P=0.013)。mir-212的表達(dá)和月經(jīng)狀況、腫塊大小、雌激素和孕激素受體狀態(tài)及Her-2表達(dá)未見(jiàn)顯著相關(guān)性。

2.3 miR-212干預(yù)對(duì)MCF7乳腺癌細(xì)胞增殖的影響 為分析miR-212在乳腺癌中的作用,不同濃度miR-212inhibitor轉(zhuǎn)染MCF7乳腺癌細(xì)胞,下調(diào)細(xì)胞內(nèi)miR-212的表達(dá),通過(guò)MTT法分析細(xì)胞活性的影響。圖3結(jié)果顯示,與空白對(duì)照組、陰性對(duì)照組比較,20、40、80nM的miR-212 inhibitor轉(zhuǎn)染均可顯著抑制MCF7細(xì)胞增殖(P<0.05),不同濃度間差異無(wú)統(tǒng)計(jì)學(xué)意義。

圖1 m i R-212及U6莖環(huán)RT-real t i m ePCR熔解曲線

圖2 m i R-212在乳腺癌組織及其配對(duì)癌旁正常組織中的相對(duì)表達(dá)水平(*P<0.01)

不同濃度miR-212 inhibitor轉(zhuǎn)染MCF7細(xì)胞48h后,采用Tran-swell侵襲實(shí)驗(yàn)檢測(cè)各組細(xì)胞的侵襲能力。圖4結(jié)果顯示,與空白對(duì)照組、陰性對(duì)照組比較,20、 40、80nm的miR-212 inhibitor轉(zhuǎn)染組明顯抑制細(xì)胞遷移(P<0.01)。

表2 乳腺浸潤(rùn)性導(dǎo)管癌中m i r-212表達(dá)和臨床病理因素的相關(guān)性

3 討論

miRNA是在真核生物體內(nèi)發(fā)現(xiàn)的一類(lèi)內(nèi)源性非編碼微小RNA,廣泛存在于動(dòng)植物中,在進(jìn)化上具有保守性及時(shí)間和空間特異性[6]。目前人類(lèi)已發(fā)現(xiàn)超過(guò)2 588種成熟的miRNA(http://www.mirbase.org),它們通過(guò)改變互補(bǔ)序列的miRNA的穩(wěn)定性和翻譯效率調(diào)控人類(lèi)約1/3的編碼基因[6-7],廣泛參與到細(xì)胞分化、增殖、衰老、凋亡、遷移和侵襲等過(guò)程中[8-9]。自2002年Galin等[10]首次報(bào)道m(xù)iRNA水平的異常表達(dá)可能與腫瘤相關(guān),miRNA在腫瘤發(fā)生、發(fā)展中的作用越來(lái)越受到重視。

圖3 m i R-212 i nhi bi t or干預(yù)對(duì)M CF7乳腺癌細(xì)胞增殖的影響 [與空白(Bl ank)組及對(duì)照(NC)組比較,*P<0.05]

miR-212是一種廣泛調(diào)節(jié)效應(yīng)的miRNA,其基因定位于17p13.3區(qū)域。除外參與小鼠乳腺發(fā)育[11-12]、神經(jīng)元[13-14]、免疫細(xì)胞[15-16]功能的調(diào)節(jié),miR-212還參與腫瘤的發(fā)生、發(fā)展。但miR-212在不同的腫瘤組織存在不同的表達(dá)的模式。在非小細(xì)胞肺癌[17]、口腔癌[18]、胰腺癌[19]等腫瘤上調(diào)表達(dá),而在肝細(xì)胞肝癌[20]、胃癌[21]、結(jié)腸癌[22]、前列腺癌[23]等卻是下調(diào)表達(dá)。然而,乳腺癌組織miR-212表達(dá)及效應(yīng)迄今尚未見(jiàn)報(bào)道。為分析miR-212與乳腺癌的關(guān)系,本研究以U6為內(nèi)參,應(yīng)用莖環(huán)RT-PCR檢測(cè)了32例乳腺癌組織miR-212的表達(dá),結(jié)果顯示,miR-212在乳腺癌組織的表達(dá)高于對(duì)應(yīng)的正常組織。進(jìn)一步分析miR-212表達(dá)水平與乳腺癌臨床病理特征的關(guān)系發(fā)現(xiàn),mir-212表達(dá)與淋巴結(jié)轉(zhuǎn)移、TNM分期及ki67相關(guān)。進(jìn)一步通過(guò)瞬時(shí)轉(zhuǎn)染miR-212 inhibitor干預(yù)實(shí)驗(yàn)發(fā)現(xiàn),miR-212下調(diào)表達(dá)后明顯抑制MCF7乳腺癌細(xì)胞的增殖及侵襲。這些結(jié)果提示,miR-212在乳腺癌中可作為促癌基因參與乳腺癌的發(fā)生、發(fā)展過(guò)程。

已鑒定的miR-212靶基因包括:Patched-1(TCH1)[17]、乙酰膽堿酯酶、CYP2E1[24]、Bcl-6[15]、錳超氧化物歧化酶(MnSOD)[22]、IRAK4[16]、PTEN、FOXO3a、p300[14]等。不同類(lèi)型的腫瘤其調(diào)控的靶基因也不盡相同。Ma C等報(bào)道m(xù)iR-212過(guò)表達(dá)通過(guò)對(duì)PTCH1的調(diào)控,促進(jìn)胰腺癌的發(fā)展和轉(zhuǎn)移[17]。Lu等[25]報(bào)道,miR-212通過(guò)對(duì)乙酰膽堿酯酶的調(diào)節(jié)是其非小細(xì)胞肺癌重要機(jī)制。此外,miR-212通過(guò)調(diào)控視網(wǎng)膜細(xì)胞瘤結(jié)合蛋白2(RBP2)表達(dá)參與了肝癌[20]和胃癌[21]的發(fā)病過(guò)程。迄今miR-212參與乳腺癌的調(diào)控靶點(diǎn)尚未明確,miR-212參與乳腺癌的發(fā)生、發(fā)展機(jī)制過(guò)程的調(diào)控機(jī)制需進(jìn)一步研究。

圖4 m i R-212干預(yù)對(duì)M CF7乳腺癌細(xì)胞侵襲能力的影響[與空白(Bl ank)組及對(duì)照(NC)組比較,*P<0.01]

[1] Adams B D,Kasinski A L,Slack F J.Aberrant Regulation and Function of MicroRNAs in Cancer[J] .Current biology:CB,2014, 24(16):R762-R776.

[2] Vincent K,Pichler M,Lee G W,et al.MicroRNAs,Genomic Instability and Cancer[J] .International journal of molecular sciences, 2014,15(8):14475-14491.

[3] Incoronato M,Urso L,Portela A,et al.Epigenetic regulation of miR-212 expression in lung cancer[J] .PloS one,2011,6(11): e27722.

[4] Ma C,Nong K,Wu B,et al.miR-212 promotes pancreatic cancer cell growth and invasion by targeting the hedgehog signaling pathway receptor patched-1[J] .Journalof experimental&clinical cancer research:CR,2014,33:54.

[5] Wada R,Akiyama Y,Hashimoto Y,et al.miR-212 is downregulated and suppresses methyl-CpG-binding protein MeCP2 in human gastric cancer[J] .International journal of cancer Journal internationaldu cancer,2010,127(5):1106-1114.

[6] Bartel D P.MicroRNAs:genomics,biogenesis,mechanism,and function[J] .Cell,2004,116(2):281-297.

[7] Lewis B P,Shih I H,Jones-Rhoades M W,et al.Prediction of mammalian microRNAtargets[J] .Cell,2003,115(7):787-798.

[8] Shukla G C,Singh J,Barik S.MicroRNAs:Processing,Maturation, Target Recognition and Regulatory Functions[J] .Molecular and cellular pharmacology,2011,3(3):83-92.

[9] BartelD P.MicroRNAs:target recognition and regulatory functions [J] .Cell,2009,136(2):215-233.

[10] Calin G A,Dumitru C D,Shimizu M,et al.Frequent deletions and down-regulation of micro-RNA genes miR15 and miR16 at 13q14 in chronic lymphocytic leukemia[J] .Proceedings of the National Academy of Sciences of the United States of America,2002,99(24):15524-15529.

[11] Ucar A,Erikci E,Ucar O,et al.miR-212 and miR-132 are dispensable for mouse mammary gland development[J] .Nature genetics,2014,46(8):804-805.

[12] Kayo H,Kiga K,Fukuda-Yuzawa Y,et al.miR-212 and miR-132 are dispensable for mouse mammary gland development[J] . Nature genetics,2014,46(8):802-804.

[13] Remenyi J,van den Bosch M W,Palygin O,et al.miR-132/212 knockout mice revealroles for these miRNAs in regulating cortical synaptic transmission and plasticity[J] .PloS one,2013,8(4): e62509.

[14] Wong H K,Veremeyko T,Patel N,et al.De-repression of FOXO3a death axis by microRNA-132 and-212 causes neuronal apoptosis in Alzheimer's disease[J] .Human molecular genetics, 2013,22(15):3077-3092.

[15] Nakahama T,Hanieh H,Nguyen N T,et al.Aryl hydrocarbon receptor-mediated induction of the microRNA-132/212 cluster promotes interleukin-17-producing T-helper cell differentiation [J] .Proceedings of the National Academy of Sciences of the U-nited States ofAmerica,2013,110(29):11964-11969.

[16] Nahid MA,Yao B,Dominguez-Gutierrez P R,et al.Regulation of TLR2-mediated tolerance and cross-tolerance through IRAK4 modulation by miR-132 and miR-212[J] .Journal of immunology,2013,190(3):1250-1263.

[17] Li Y,Zhang D,Chen C,et al.MicroRNA-212 displays tumor-promoting properties in non-small cell lung cancer cells and targets the hedgehog pathway receptor PTCH1[J] .Molecular biology ofthe cell,2012,23(8):1423-1434.

[18] Scapoli L,Palmieri A,Lo Muzio L,et al.MicroRNA expression profiling of oral carcinoma identifies new markers of tumor progression[J] .Internationaljournalof immunopathology and pharmacology,2010,23(4):1229-1234.

[19] Park J K,Henry J C,Jiang J,et al.miR-132 and miR-212 are increased in pancreatic cancer and target the retinoblastoma tumor suppressor[J] .Biochemicaland biophysicalresearch communications,2011,406(4):518-523.

[20] Liang X,Zeng J,Wang L,et al.Histone demethylase retinoblastoma binding protein 2 is overexpressed in hepatocellular carcinoma and negatively regulated by hsa-miR-212[J] .PloS one, 2013,8(7):e69784.

[21] Jiping Z,Ming F,Lixiang W,et al.MicroRNA-212 inhibits proliferation of gastric cancer by directly repressing retinoblastoma binding protein 2[J] .Journal of cellular biochemistry,2013,114 (12):2666-2672.

[22] Meng X,Wu J,Pan C,et al.Genetic and epigenetic down-regulation of microRNA-212 promotes colorectal tumor metastasis via dysregulation of MnSOD[J] .Gastroenterology,2013,145(2): 426-436.

[23] Walter B A,Valera VA,Pinto P A,et al.Comprehensive microRNAProfiling of Prostate Cancer[J] .Journalof Cancer,2013,4(5): 350-357.

[24] Shukla U,Tumma N,Gratsch T,et al.Insights into insulin-mediated regulation of CYP2E1:miR-132/-212 targeting of CYP2E1 and role ofphosphatidylinositol3-kinase,Akt(protein kinase B), mammalian targetofrapamycin signaling in regulating miR-132/-212 and miR-122/-181a expression in primary cultured rat hepatocytes[J] .Drug metabolism and disposition:the biologicalfate ofchemicals,2013,41(10):1769-1777.

[25] Lu L,Zhang X,Zhang B,et al.Synaptic acetylcholinesterase targeted by microRNA-212 functions as a tumor suppressor in non-small cell lung cancer[J] .The international journal of biochemistry&cellbiology,2013,45(11):2530-2540.

Analysis of the expression and effectin invasive ductal carcinoma of the breastmiR-212


QU Haijiang, ZHANG Xiaohua, HUANG Guanli, etal.
Departmentof Tumor Surgery, theFirstAffiliated Hospital of Wenzhou Medical University,Wenzhou 325000,China

Objective To investigate the expression of miR-212 in breast invasive ductal carcinoma and its correlation with clinicopathological characteristics of the cancer. Methods The expression of miR-212 was detected by loop RT-qPCR in cancer and pericancerous tissue specimens of 38 breast cancer patients.The relationship between miR-212 expression l and clinicopathological characteristics was analyzed.MiR-212 inhibitor was transfected into human breast cancer MCF7 cells,then cell proliferation was determined by MTT method and cell invasive ability was measured by Tran-swell assay. Results Compared pericancerous breast tissues,the expression of miR-212 in cancer tissues was significantly higher(P<0.05);the expression level of miR-212 was correlated with lymph node metastasis,TNM staging and proliferation index(Ki67)(P<0.05),not correlated with menopausal status,tumor size,estrogen and progesterone receptor status,and Her-2 status(P>0.05).Compared with the blank control group and negative control group,miR-212 inhibitor significantly inhibited cell proliferation(P<0.05)and migration (P<0.01)in MCF7 cells. Conclusion MiR-212 is high expressed in breast cancer,which may be involved in the development of breast carcinoma,indicating miR-212 might be a new target in breast cancer therapy.

microRNA miR-212 Breast cancer

2014-09-15)

(本文編輯:田云鵬)

325000 溫州醫(yī)科大學(xué)附屬第一醫(yī)院腫瘤外科(瞿海江、張?bào)闳A、黃關(guān)立,瞿海江系在職研究生,現(xiàn)在臺(tái)州市腫瘤醫(yī)院腫瘤外科工作);臺(tái)州市腫瘤醫(yī)院腫瘤外科(胡哲、魏志平)

猜你喜歡
浸潤(rùn)性乳腺引物
DNA引物合成起始的分子基礎(chǔ)
高中生物學(xué)PCR技術(shù)中“引物”相關(guān)問(wèn)題歸類(lèi)分析
SSR-based hybrid identification, genetic analyses and fingerprint development of hybridization progenies from sympodial bamboo (Bambusoideae, Poaceae)
體檢查出乳腺增生或結(jié)節(jié),該怎么辦
浸潤(rùn)性乳腺癌超聲及造影表現(xiàn)與P63及Calponin的相關(guān)性
得了乳腺增生,要怎么辦?
媽媽寶寶(2017年2期)2017-02-21 01:21:22
乳腺浸潤(rùn)性微乳頭狀癌的研究進(jìn)展
火炬松SSR-PCR反應(yīng)體系的建立及引物篩選
乳腺浸潤(rùn)性導(dǎo)管癌組織β-catenin、cyclinD1、CDK4蛋白表達(dá)及臨床意義
容易誤診的高回聲型乳腺病變
广饶县| 北川| 西林县| 肃南| 和田县| 巴塘县| 颍上县| 融水| 甘南县| 上林县| 金堂县| 林甸县| 安康市| 东乡县| 莫力| 重庆市| 舞钢市| 巴塘县| 赫章县| 马公市| 时尚| 滦平县| 威海市| 灵川县| 定陶县| 始兴县| 团风县| 长宁区| 大余县| 延安市| 常州市| 余庆县| 澎湖县| 恩平市| 滦南县| 旬阳县| 霞浦县| 阳朔县| 永福县| 綦江县| 钟山县|